I don't think it's overpriced, ~$8 per month for email, online storage, web gallery, etc for 5 people ain't bad at all.
What I want out of MobileMe is the ability to sync bookmarks with Firefox! It can only sync with Safari and Internet Explorer on Windows. Utterly silly, but true.
That's true, but the only thing I use it for is email, and some online storage. I suppose I should get with the times and start putting all my pictures on the web and sync all of those system settings, but I just don't have the energy for that anymore nor do I see the use for a lot of that myself.